BS 1 - Blood

Today's lesson
Start ch3: the circulatory system
- What is the circulatory system?
- §3.1 Blood and its parts

- Goal:  You can name the components of blood with their features and functions.


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Slide 1: Tekstslide
BiologieMiddelbare schoolvwoLeerjaar 2

In deze les zitten 28 slides, met interactieve quizzen, tekstslides en 2 videos.

Onderdelen in deze les

Today's lesson
Start ch3: the circulatory system
- What is the circulatory system?
- §3.1 Blood and its parts

- Goal:  You can name the components of blood with their features and functions.


Slide 1 - Tekstslide

What does circulation mean? Ex. A teacher circulates the room answering the students questions.
A
To move around.
B
To move in a circle.
C
To move backwards.
D
To move up and down.

Slide 2 - Quizvraag

The circulatory system

A system of tubes that moves substances around your body. 

The heart muscle powers this movement.

Slide 3 - Tekstslide

Slide 4 - Video

What do we know already?
  • Unit 1: Blood carries oxygen & CO2
  • Unit 2: Blood carries nutrients

Slide 5 - Tekstslide

What moves around in your body via the circulatory system?
A
cells, tissues, organs
B
eyes, ears, stomach
C
blood, food, oxygen
D
blood, nutrients, oxygen, CO2

Slide 6 - Quizvraag

Blood - What comes to mind?

Slide 7 - Woordweb

Blood
  • Function: Blood transports everything your body needs
  • Ex. heat, nutrients, oxygen, CO2, waste products
  • Blood contains:
  1. Plasma: plasma proteins (ex. fibrinogen), water, dissolved substances 
  2. Solids: red and white blood cells, platelets

Slide 8 - Tekstslide

Summary 
• Blood consists of blood plasma (about 55%) and blood cells and platelets (about 45%).
• Blood plasma: water with plasma proteins (such as fibrinogen) and dissolved substances (including salts).
– Blood plasma transports oxygen (to a small extent), nutrients, antibodies, carbon dioxide and other waste products.
– Fibrinogen plays a role in clotting.

Slide 9 - Tekstslide

What is blood?

Slide 10 - Tekstslide

Red blood cells
  • Small round discs
  • No nucleus
  • Red pigment: haemoglobin
  • Function: absorb and release oxygen

Slide 11 - Tekstslide

White blood cells
  •  Function: destroy pathogens (bacteria) 
  • Do have a nucleus
  • No fixed shape
  • Can squeeze through openings

Pus: Dead WBC and the bacteria they killed

Slide 12 - Tekstslide

White blood cells 

Slide 13 - Tekstslide

Platelets
  • Not cells 
  • Broken parts of cells
  • Function: clotting 
Clotting inside blood vessels is called thrombosis

Slide 14 - Tekstslide

platelets 

Slide 15 - Tekstslide

summary blood components 

– Anaemia: the blood contains too little haemoglobin. This can make you feel weak and tired all the time.
• White blood cells:
– Cells with nuclei.
– White blood cells do not have a fixed shape; they can pass through the capillaries’ walls.
– Function: protection against pathogens, for instance by encapsulating bacteria.
• Platelets:
– Fragments of cells that have broken up, with no nuclei.
– Function: coagulation.

Slide 16 - Tekstslide

Slide 17 - Video

Worktime
Read 3.1 Blood
Make assignment 1 -4 and 6 - 9

Not finished? Homework!

timer
15:00

Slide 18 - Tekstslide

Recap - what was the lesson about?
1. The circulatory system
2. Blood and it's parts
         - red blood cells
         - blood plasma
         - white blood cells


Slide 19 - Tekstslide

What is the function of the red blood cell (RBC)?

Slide 20 - Open vraag

Why do we have white blood cells?
A
To protect us from suffocating
B
To protect us from bleeding out
C
To protect us from the cold
D
To protect us from pathogens

Slide 21 - Quizvraag

What is the function of blood?
A
transport oxygen
B
transport nutrients
C
transport waste
D
fighting diseases

Slide 22 - Quizvraag

Oxygenated blood is red; deoxygenated blood is blue.
A
Fact
B
Fiction

Slide 23 - Quizvraag

Which blood cells make sure blood cloths?
A
Phagocytes
B
Lymphocytes
C
Red blood cells
D
Platelets

Slide 24 - Quizvraag

Small air sacs that make up our lungs and make gas exchange possible
A
Bronchi
B
Trachea
C
Alveoli
D
Cartilage

Slide 25 - Quizvraag

What did you learn today?

Slide 26 - Open vraag

What questions do you still have about blood?

Slide 27 - Open vraag

HW: 
Read 3.1 Blood
Make 1 t/m 4 & 5 t/m 9
 Extra: 10

Slide 28 - Tekstslide